This suburban house is made of dirt, and almost sparked a revolution in home construction.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

The likeness of the Baltimore music icon was unveiled in time for the anniversary of his Senate hearings on music censorship.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

This former asylum for Black Americans is haunted by its history of violence and racism.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

An eerie, decaying ghost town destined to fade into the forest.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

Bizarre Cavern.

Eighteen miniature death-scene dioramas.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.